4.98×99+4.98 用简便计算

2024-12-29 00:48:59
推荐回答(5个)
回答1:

 

回答2:

 

回答3:

 

回答4:

=4.98×99+4.98×1
=4.98×(99+1)
=4.98×100
=498

回答5:

=4.98✘(99+1)=4.98✘100=498